No Preference shall be given by any Regulation of Commerce or Revenue to the Ports of one State over those of another: nor shall Vessels bound to, or from, one State, be obliged to enter, clear or pay Duties in another.
Clause 6
U.S. Const. art. I, § 9, cl. 6, under Section 9.
U.S. Const. art. I, § 9, cl. 6
Clause 6